Spring bed-bottom



(No Model.)

D. EDGAR. SPRING BBD BOTTOM.

Pateltead Mar. 1, 1892.

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y ilNrrniD STATESPATENT OFFICE.

DANIEL EDGAR, OF ADRIAN, MICHIGAN.

SPRING BED-BOTTOM.

SPECIFICATION forming part of Letters Patent No. 469,836, dated March 1, 1892.

Application filed August 18, 1891. Serial No. 403,016. (No model.)

To a/ZZ whom it may concern: I

' ends.

The object of my present invention is to provide an improved head-piece, which is supported by springs of an improved construction and iiexibly connected to the body springs without the use of a hinge. In this connection my invention also consists in improved means for supporting and adjusting the main body-springs of the bed to compensate for the adjustment of the head-piece.

In the accompanying drawings, Figure l is a plan view of a spring bed-bottom embodying my invention. Fig. 2 is a side elevation thereof, and Figs. 3 and 4 show details of construction.

The framevis shown as consisting of slats A A A2, connected at their ends by longitudinal slats B. The supporting-springs O, which may be of any approved form and construction, are arranged on the slats A at equal distances apart. Any desired number of supporting-springs may be employed.

At opposite ends of the bed-bottom are the head and foot pieces D E. Vhen these are on the same plane as the top of the supporting-springs, theyare in position over the slats A and A2.

Coiled or helical springs F extend on opposite sides of the bed-bottom from the head to the foot piece, to which they are connected.

theirinner ends torings G. The head and foot rows of supporting-springs are connected to the head and foot cross-pieces by the coiled springs G and rings G', and these rings are connected with each other and to the bordersprings by means of springs G2. Springs H may also be employed to connect adjacent supporting-springs, as indicated.

It will be observed that the head and foot pieces are iiexibly connected with the bodysprings, and, when free, assume a position above the level of the springs without the use of a hinge, as shown in the drawings.

The head-piece and the foot-piece are similar in construction and operation. Each of them is secured to iiat curved springs I, having at their lower ends'feet t', arranged over the end slats A.v Flat curved springs K are secured to cross-pieces A and A2 and extend to the end cross-pieces A beneath the feet of the springs I, to which they are secured. The springs K co-operate with the springs I and tend to raise the head and foot pieces above the level of the bed-bottom, which may be held in any desired position by means of adjusting devices or chains L, secured to the cross-pieces A and A2 and engaging with hooks M on the pieces D and E` Vhen the head-piece D is elevated, there is no strain on the springs, and the foot-piece may be released from the chains, so that all the springs will maintain their normal position; but when the head-piece is lowered and held by the chains against the force of the springs there is a tendency to pull the supporting-springs out of their normal position and there is more strain on some of the springs than the others. To compensate this the foot-piece is adjustable correspondingly with the head-piece, and in this way the tension on all the springs is maintained uniformly.

In operation the lower ends or feet of the springs I slide on the cross-pieces A', and thus relieve themselves from undue strain, keep the tension uniform, and also allow the head and foot cross-pieces to assume a horizontal position in line with the upper surface of the supporting-springs.

In order to sustain the supporting-springs C, I employ on opposite sides of the bed below the border-springs wires N, secured to the 'slats B and extending through the outside row IOO of supporting-springs about midwaybetween their upper and-lower ends.' A bed-bottom thus constructed is not only simple, but it is durable, comfortable, and easily adjusted.

Although a number of small springs are employed to connect the upper ends of` the supporting-springs, I find that such an a1'- rangement is necessary in order to produce the greatest comfort and maintain uniform elasticity throughout the bed-bottom.

I claim as my invention- The combination, substantially as hereinbefore set forth, of a slattedframe, supporting-springs mounted thereon,I springs con# necting the supporting-springs at their upper ends, the head and foot cross-pieces, springs connecting them to the supporting-springs, the continuous border-springs connected to In testimonywhereof I have hereunto sub- 3o scribed my naine.

' DANIEL EDGAR.

Witnesses:

C. I-I; DAVIDSON, J. L. MITCHELL. 

